GATEWAY TO CGL MAINS 2015 : Chemistry Quiz

1. The nuclear particles which are assumed to hold the nucleons together are ?

A.positrons

B.neutrons

C.electrons

D.mesons

2. The metal that is used as a catalyst in the hydrogenation of oils is ?

A.Pb

B.Ni

C.Cu

D.Pt

3. The most abundant rare gas in the atmosphere is ?

A.He

B.Ne

C.Ar

D.Xe

4. The luster of a metal is due to :

A.high polishing

B.high density

C.chemical inertness

D.presence of free electrons

5. The material which can be deformed permanently by heat and pressure is called a

A.thermoset

B.thermoplastic

C.chemical compound

D.polymer

6. Mass number of a nucleus is :

A.the sum of the number of protons and neutrons present in the nucleus

B.always more than the atomic weight

C.always less than its atomic number

D.None of above

7. Due to rusting the weight of iron

A.Decreases

B.Increases

C.Remains the same

D.Uncertain

8. Which gas is used to manufacture vanaspati from vegetable oil is

A.carbon dioxide

B.nitrogen

C.oxygen

D.hydrogen

9. Which one is an organic Acid ?

A.Sulphuric

B.Citric

C.Nitric

D.Phosphoric

10. Chemical used in photography is

A.sodium sulphate

B.sodium sulphite

C.sodium thiosulphate

D.sodium oxalate

ANSWERS KEY:
1- (D)
2- (B)
3- (C)
4- (D)
5- (A)
6- (A)
7- (B)
8- (D)
9- (B)
10- (C)